package com.example.demo4;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/books")
public class BookController {
    @GetMapping
    public String hello(){
        System.out.println("Hello");
        return "你好三弟";
    }
}
